How Long Does a Cortisone Shot Last? (And How Often You Can Get One)

If you’re weighing a cortisone shot for a sore knee, shoulder, hip, or back, two questions come up first: how long will the relief last, and how often can you safely get one? The short answer is that a cortisone shot usually calms pain for a few weeks to a few months, and most specialists limit it to roughly three or four shots in the same joint per year. But the more useful answer is what those limits are telling you.

A cortisone shot quiets inflammation and buys you a window of comfort. It doesn’t repair the joint underneath. At Empire Minimally Invasive Spine and Pain, we treat that window as time to work with — not a plan on its own. If you find yourself needing shots again and again, that’s a signal to look at longer-lasting options rather than keep reaching for the same needle.

How long does a cortisone shot last?

A cortisone shot’s pain relief usually lasts somewhere between a few weeks and a few months. There’s no single number that fits everyone — how long it holds depends on the joint, what’s causing the pain, and how much damage is already there. Some people get several good months; others notice the effect fade sooner.

It helps to think of a cortisone shot as a strong anti-inflammatory delivered right where it hurts. It turns down the swelling and irritation that drive the pain, which is why so many people feel better. What it can’t do is rebuild worn cartilage or undo the underlying problem, so the relief is a window, not a repair.

How soon does a cortisone shot start working?

A cortisone shot doesn’t work the moment you leave the office. It usually takes a few days to start helping, and sometimes up to about a week for the full effect. Many people also feel a short flare first — the joint can be more sore for a day or two before the steroid settles in.

If you feel sorer that first day, that’s usually the flare, not a sign the shot failed. Ice and rest help. Give it several days before deciding whether the injection worked for you.

What is a cortisone shot, exactly?

A cortisone shot — also called a corticosteroid injection or a steroid injection — is a dose of anti-inflammatory medicine placed directly into or around a painful joint or tissue. It’s often mixed with a local anesthetic, so you may feel some numbing relief the same day before the cortisone itself takes over.

The “steroid” here isn’t the kind athletes misuse to build muscle. Corticosteroids are copies of a hormone your body already makes to control inflammation. Doctors use them for arthritis flares, bursitis, tendon irritation, and back or neck pain from irritated spinal joints and nerves. Placing the medicine right at the source is why an injection can work when pills don’t reach far enough.

What makes relief last longer or wear off sooner?

How long a cortisone shot lasts comes down to a few things: which joint it’s in, what’s actually causing the pain, and how advanced the problem is. A shot for a short-lived flare in an otherwise healthy joint tends to last longer than one fighting severe, bone-on-bone arthritis. The steroid can only hold back so much for so long.

• The cause. Inflammation from a flare responds well. Structural damage, like advanced arthritis, keeps generating pain, so relief fades faster.
• The joint. A large, stable joint may hold relief differently than a small or heavily used one.
• Activity level. Going straight back to hard use can stir the joint up again sooner.
• The underlying condition. Because a shot doesn’t fix the cause, a worsening problem will eventually break through the relief.

How often can you get a cortisone shot?

Most doctors limit cortisone to about three or four shots in the same joint per year, with time in between rather than back-to-back. It’s a practical guideline, not a hard legal cap — but it’s there for a reason, and a good specialist will hold to it to protect your joint.

Here’s the part worth sitting with: the AAOS points out that once you’re past that practical range, it’s usually a cue to look at other treatment rather than more cortisone. In our practice, that’s exactly how we read it. If a joint needs a shot every few months just to stay tolerable, the shots aren’t solving the problem — they’re holding a line while the cause keeps advancing.

Why is there a limit — can cortisone harm the joint?

The limit exists because cortisone isn’t free of trade-offs. The same medicine that calms inflammation may, with repeated use, work against the joint it’s meant to help. That’s the main reason specialists space shots out and count them — and why “just give me another one” isn’t always the right answer.

The AAOS also notes that repeated injections tend to work less well over time, because the underlying condition keeps progressing while the shots only mask it. So the frequency limit isn’t red tape. It’s the medicine’s honest ceiling — and it’s the point where Empire’s step-and-ladder approach says to step up to something that does more than buy time.

What should you not do after a cortisone shot?

For a day or two after a cortisone shot, take it easy on the treated joint. The single most common mistake is feeling great and immediately overdoing it — because the pain is quiet, not because the joint is fixed. Give the medicine time to settle and the joint a short rest.

• Ease off hard activity for about 24 to 48 hours. Skip heavy exercise, long runs, or lifting with the treated joint right away.
• Don’t chase the “all better” feeling. Relief can mask a problem that’s still there, so returning to full impact too fast can set you back.
• Use ice, not heat, for soreness during the flare, and keep the injection site clean and dry.
• If you have diabetes, watch your blood sugar. Cortisone can raise it for a few days.
• Call your doctor if you get a fever, spreading redness, or worsening swelling after the first two days — those can signal a rare infection.

What are the side effects and risks?

Cortisone shots are widely used and generally well tolerated, but they aren’t risk-free. Most side effects are minor and short-lived, like the flare, temporary soreness, or a brief rise in blood sugar. Less common risks go up with larger doses and more frequent shots — another reason to keep the count in check.

This balance is why the goal isn’t to avoid cortisone — it’s a genuinely useful tool — but to use it deliberately. One or two well-timed shots to calm a flare and get you moving is very different from leaning on injections as a long-term plan.

What lasts longer than a cortisone shot?

If you keep needing cortisone, several options aim for more durable relief. They work differently and none is right for everyone, so the best choice depends on the joint, the diagnosis, and your goals. The table below compares the ones patients ask about most.

For an arthritic knee, gel (viscosupplementation) injections add lubrication a steroid can’t, and PRP therapy uses your own blood platelets to support the joint. For back and neck pain coming from the small spinal (facet) joints, radiofrequency ablation can quiet the specific nerves carrying the pain, often for much longer than a shot. To see how cortisone fits alongside the other options by joint, see our overview of major joint injections for the knee, hip, and shoulder.

This is Empire’s step-and-ladder philosophy in practice: start with the least invasive option that fits, use cortisone when it earns its place, and step up to something more durable when the shots stop keeping pace. Whether the pain is in your knee or your back, the aim is the same — the smallest step that actually resolves the problem, not a standing appointment for another needle.

Frequently asked questions

How long does a cortisone shot last in the knee?

In the knee, cortisone relief usually lasts a few weeks to a few months, much like other joints. How long it holds depends on how much arthritis is present — a mild flare responds better than an advanced, bone-on-bone knee. If shots wear off quickly, gel or PRP injections may be worth discussing.

How long does a cortisone shot last in the shoulder or hip?

Shoulder and hip shots follow a similar pattern: relief that builds over a few days and lasts weeks to months. The exact length varies with the diagnosis, whether it’s bursitis, tendon irritation, or arthritis. Your specialist can give a more specific estimate after examining the joint and reviewing any imaging.

What happens if you get too many cortisone shots?

Getting cortisone too often raises the risk of side effects and may harm cartilage or weaken nearby tendons and bone over time. That’s why doctors limit shots to about three or four per joint each year. Needing more than that is usually a sign to switch strategies rather than keep injecting.

Can I exercise after a cortisone shot?

Light movement is fine, but hold off on hard exercise for about a day or two while the shot settles. Going full-force right away — especially once the pain quiets — can irritate the joint again. Ask your doctor when to resume your usual activity based on the joint treated.

Does a cortisone shot fix the problem for good?

No. A cortisone shot treats inflammation and eases pain, but it doesn’t repair cartilage or fix the underlying cause. It’s best used to calm a flare and create a window for physical therapy or other treatment — not as a stand-alone, long-term solution.

This article is for general education and is not a substitute for medical advice. Individual results vary. Talk with a qualified clinician about your specific symptoms and treatment options.